To test for protein, you added biuret solution and observed color changes. suppose that the color data below was observed. sources of error the data above indicate an error. how do you know? what might have caused the error?

answer; both surfaces of the membrane are nonpermeable

igneous rocks are formed by solidification of cooled magma (molten rock), with or without crystallization, either below the surface as intrusive (plutonic) rocks or on the surface as extrusive (volcanic) rocks.  

the composition depends on the source magma. there are almost a thousand types of composition found till now.  

hope this

nb

explanation:

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